Door holders and stops



March 8, 1966 H. K. BRYSON ETAL 3,239,261

DOOR HOLDERS AND STOPS Filed Jan. 24. 1961 8 Sheets-Sheet 1 INVENTORS:P1 6 We. (EM/m;

65 m? 5 Jan, 67 67 W a. Fig. 7

66 BY W a.

ATTORNEY March 8, 1966 BRYSQN ETAL 3,239,261

DOOR HOLDERS AND STOPS 8 Sheets-Sheet 2 Filed Jan. 24. 1961 v! mm M w mQ QM an A A mm W no w M 5 8 W BY March 8, 1966 K. BRYSON ETAL DOORHOLDERS AND STOPS 8 Sheets-Sheet 5 Filed Jan. 24 1961 Fig. /2

INVENTORS Alfred B. Casfle H. Knox Bryson Milford A. Jufen A TTORNEYMarch 1966 H. K. BRYSON ETAL 6 DOOR HOLDERS AND STOPS Filed Jan. 24,1961 8 Sheets-Sheet 4 FIG. 22

IN VE NTOR ALFRED B. CASTLE H. KNOX BRYSON MILFORD A. JUTEN ATTORNEYMarch 1966 H. K. BRYSON ETAL 3,239,261

DOOR HOLDERS AND STOPS Filed Jan. 24, 1961 8 Sheets-Sheet 5 FIG. 26

INVENTORS ALFRED B. CASTLE H. KNOX BRYSON MILFORD A. JUTEN ATTORNEY BY WMarch 8, 1966 H. K. BRYSON ETAL DOOR HOLDERS AND STOPS Filed Jan. 24,1961 FIG. 53

wA FIG. 39 FIG 38 307A WA 8 Sheets-Sheet '7 FIG.54

FIG. 57 385 370 o 365 i J? 38 375 6 371 D 59L v #59 3 9 38k/ 74 3e? 37o[I I; 372 377 383 379 373 384 FIG. 59 389 373 FIG. 58 INVENTOR 365 H.KNOX BRYSON ALFRED B. CASTLE MILFORD A JUTEN ATTORNEY United StatesPatent 3,239,261 DOflR HOLDERS AND STGPS Henry Knox Bryson, Vienna, Va.(11150 Navajo Drive N., St. Petersburg, Fla.); Alfred B. Castle,Brookrnont, Md.; and Milford A. Juten, Brookmont, Md. (4008 61st St.NW., Washington 16, D.C.); said Castle assignor to said Bryson Filed.Ian. 24, 1961, Ser. No. 84,675 17 Claims. (Cl. 292--75) The presentinvention relates to hardware and more particularly to door holders anddoor stops used for holding doors open and preventing doors from movingbeyond a predetermined position, and is a continuationin-part to ourprior applications Ser. No. 405,738 filed Ian. 23, 1954 now abandonedand Ser. No. 513,658 filed June 7, 1955 now abandoned, andcontinuation-in-part applications Ser. No. 784,150 filed Dec. 31, 1958now abandoned, and Ser. No. 6,584 filed January 15, 1960, now Patent No.3,163,452, issued December 29, 1964, the present application being acontinuation-in-part of said applications, priority being claimed toeach of said applications for the subject matter disclosed therein.

Although door holders and door stops have been used for holding doorsopen and preventing doors from moving beyond a fixed point, the priorart structures have not been entirely satisfactory since the forcerequired to push the door to its held open position beyond the floorprejection has been so great as to twist the door. In hospitals andother places where people of little strength desire to operate the doorsand where noise is objectionable it has not been possible to use doorholders to the maximum extent. Also the noise resulting from lost motionhas been objectionable. Although door holders may have been satisfactoryfor one installation, ditferences in spacing between the bottom of thedoor and the floor have made it necessary to provide excessively highdoor stops or keepers to serve under all conditions. In use these highdoor stops or keepers have been objectionable as interfering with thesmooth contour of the fioor with resulting danger to people and damageto equipment such as floor waxers and the like.

It is an object of the present invention to overcome the aboveenumerated defects of the prior art door holders and door stops.

A further object object is to provide a door holder which is adjustablefor use with different height keepers or stops and which is adjustablefor different tensions exerted by door closers so that a single model ofdoor holder may be used with a large number of door closers withoutrequiring separate engineering considerations for each use.

A further object is to provide a door holder which may be used withextremely low door stops.

Another object is to provide a door holder keeper or stop which has asmooth outline of large curvature on convex corners to prevent injury topersons or equipment.

A further object is to provide a door holder which cannot be damaged bychildren, or misused by unauthorized persons.

Another object is to provide a smooth exterior for the device withweather and tamperproof covers to prevent damage to the device byclimatic conditions and/or by vandals.

A further object is to provide a door holder door stop combination whichhas a snubbing action on the inertia forces in a door being opened withexcessive force.

Another object is to provide a detent and keeper combination of generalutility to provide a controlled retaining force.

Another object is to provide a mounting for a keeper which is secure andprovides for obtaining precise angular positioning on a base.

A further object is to provide a door holder combination which will notrattle and can be operated with small force in both the hold open andreleasing operations.

Another object is to provide means for securing a cover onto a doorholder so that it cannot be removed by unauthorized persons.

A still further object is to provide an attachment for other doorholders to prevent rattling and to prevent loosening of door stops.

Other objects will become apparent as the description proceeds and uponreference to the drawings in which:

FIGURE 1 is an elevation of the door holder shown on a rear portion of adoor indicated by phantom lines and one form of the keeper shown insection in operative relation therewith mounted on the floor.

FIGURE 2 is a section on line 22 of FIG. 1.

FIG. 3 is a top plan view of the keeper or stop shown in FIGS. 1 and 2with dotted line showings of two adjusted positions.

FIGURE 4 is an elevation of another form of keeper and door stop with arubber insert to engage the outer surface of the door holder.

FIGURE 5 is a top view of the modification shown in FIG. 4.

FIGURE 6 is an end view of the door stop and keeper of FIG. 4 as viewedfrom the approach side thereof.

FIGURE 7 is a side elevation of a door retainer or keeper for use tohold the door in an intermediate position from which the door may bemoved to increase or decrease the extent of opening.

FIGURE 8 is a perspective view of another embodiment of the body orchassis of the door holder with the slide and adjusting means inoperative relation.

FIGURE 9 is a perspective of the cover of the holder of FIG. 8.

FIGURE 10 is a vertical section of the door holder mounted on a door andone size of door stop mounted on the floor with the parts in operativedoor holding relation.

FIGURE 11 is a fragmentary side elevation of a portion of the doorholder with a cooperating door stop for a door of greater clearance andmounted in position on the tier and shown in adjusted condition wherebythe door is not to be held open.

FIGURE 12 is a section taken on line 1212 of FIG. 10 showing both thespring and locking screw to maintain the adjusted relation of the doorholder.

FIGURE 13 is a bottom view of the door holder of FIGS. 8 to 14.

FIGURE 14 is a side elevation of the door holder with an intermediatesize of door stop and showing another means of securing the cover inposition and locking the adjustment wheel and showing another means ofsecuring the holder on the door.

FIGURE 15 is a plan view of the door stop in operative position and alsoof an integral one piece non-adjustable door stop showing the smoothrounded contour and the smooth attaching flange.

FIGURE 16 is a perspective view of the rotating cap from the bottom ofthe cap for the door stop.

FIGURE 17 is a perspective view on a reduced scale of the lock edge of adoor with a holder and the door stop or keeper mounted on the upper endof a pipe for installations where the door swings out over a step or thelike.

FIGURE 18 is a fragmentary elevational view with parts in section of acombination similar to that shown in FIGURE 17 for use over wood floorssupported on a concrete base.

FIGURE 19 is a fragmentary perspective showing a bank of doors equippedwith the present door holder and door stop illustrating the adaptabilityof mounting close to the building wall and inwardly from the edge of thelock edge of the door.

FIGURE is a perspective of a further modification of the holderpermitting reduced overall dimensions.

FIGURE 21 is the cover for the holder of FIG. 20.

FIGURE 22 is a vertical section through the door holder, cover, and stopof the modification of FIG. 22.

FIGURE 23 is a plan view of the stop shown in FIG. 22.

FIGURE 24 is an elevation of a fragment of a door holder on a fragmentof door and a modified form of door stop for storage of energy in theholder spring and to obtain a clamping action between the door stop andthe door holder preventing lost motion and rattling.

FIGURE 25 is a horizontal section taken on line 25-25 of FIG. 24.

FIGURE 26 is a fragmentary elevation showing the door holder and stop incooperative non-hold open position.

FIGURE 27 is a horizontal section taken on line 27-27 of FIG. 26.

FIGURE 28 is a diagrammatic view illustrating the geometric relation ofthe parts to obtain the clamping and snubbing action.

FIGURE 29 is a diagrammatic view of a further modification designed tohave a minimum of jarring in operation.

FIGURE 30 is a further modification of door stop and door holder.

FIGURE 31 is an elevation of another support for the keeper for mountingin plastic concrete flush with the surface of the concrete and on whichthe keeper can be angularly mounted to correspond to the actual angle ofthe door.

FIGURE 32 is a bottom view of the supporting base showing one positionof a set of tapped holes therein.

FIGURE 33 is an elevation of a fragment of a door holder and a verticalsection of a door stop with an adjustment mechanism on the door stop tocontrol the final position of the projection of the bolt in hold openposition.

FIGURE 34 is an elevation of one form of adjustment mechanism mounted onthe door holder and stop and for controlling the force of retentionbetween the door holder and door stop in door hold open relation.

FIGURE 35 is an elevation of another form of adjustment device mountedon the door.

FIGURE 36 is still another form of adjustment device and with aselectively operable hold open means whereby the door holder and doorstop can be selectively used for holding the door open or serving onlyas a snubber .and door stop.

Each of the following FIGURES 37 to 63 is identified by a numeral in acircle.

FIG. 37 is a plan view of a door stop for mounting on the floor andhaving substantially spaced fastener receiving openings located on theapproach and distant sides of a door stop abutment surface to assurepermanent securement to the floor.

FIG. 38 and FIG. 39 are side and end views of the door stop of FIG. 37mounted on a shim or mounting base for use with a door having greaterfloor clearance.

FIGS. 40 and 41 are side and rear end views of a door stop similar toFIGS. 37 to 39 with cooperating bolt retaining surfaces.

FIG. 42 is a bottom plan view of another form of door stop similar toFIGS. 37 to 41.

FIG. 43 is a vertical section of the door stop of FIG. 42 with anelevating base support for use with doors of substantial clearance suchas doors having large floor clearance for ventilation.

FIG. 44 is a front view of the door stop and base plate Of FIG. 43.

FIG. 45 is a top plan view of a base support.

FIGS. 46 through 48 are side views of base supports of differentthickness for use with the door stop of FIGS. 42 to 44 for use withdoors of varying clearance.

FIG. 49 is a side elevation of a similar door stop with bolt engagingcam surfaces for use with a door holder.

FIG. 50 is a side elevation of a keeper for use with a door holder toretain a door in an intermediate position.

FIGS. 51 and 52 are top and end views of the keeper of FIG. 50.

FIG. 53 is a top plan view of a door stop or keeper adjustably mountedon the upper end of a rod for use with any desired height of door abovea floor or supporting surface.

FIG. 54 is a section of the turret door stop of FIG. 53 rotatablymounted on a cap shown in section which is rotatably and verticallyadjustable on a pipe fixed in concrete and showing the relation of acooperating door and holder.

FIG. 55 is a fragmentary perspective of an upper corner portion of aroom having a door equipped with a door closer and a door holder anddoor stop mounted on an L-shaped bracket secured to the adjacent wallnear the top of the door.

FIGS. 56 and 57 are side and plan views of a turret door stop mounted onthe L-shaped bracket shown in FIG. 55 but with the turret extendingupwardly.

FIG. 58 is a plan view showing how the stop mounted on the L-shapedbracket can be adjusted to accommodate for various angles of the doorand adjacent wall.

FIG. 59 is an enlarged section taken substantially on line 5959 of FIG.57 showing how the turret is mounted and how the adjustment fordifferent angles is obtained after mounting of the L-shaped bracket inposition on a wall.

FIG. 60 shows how the turret can be mounted to project away from thesame L-shaped mounting bracket of FIGS. 55 to 59.

FIG. 61 shows how the L-shaped mounting bracket with the turret arrangedas in FIG. 60 can provide for mounting above a second door in a cornerwithout interference with the operation either of the doors.

FIG. 62 is a vertical section through the door stop mounted on the fioorshowing another way in which the turret shown in elevation can beadjusted to accommodate to various angles of the door without requiringremounting of the base.

FIG. 63 is a section taken on line 6363 of FIG. 62 showing how thesemi-positive retention for holding the turret in operative andinoperative positions is obtained.

Briefly the present invention includes a body or chassis mounted on adoor with a movable detent or slide mounted in the body for projectionfrom and withdrawal into the body or chassis. A single headed boltpasses through the slide and has its head limiting projecting movementof the slide. The slide is axially adjustable in the body by a threadedadjusting wheel which is held against axial movement relative to thebody. A nut is mounted on the bolt and a spring is also mounted on thebolt and reacts between the slide and the nut. When the bolt is rotatedrelative to the nut the tension of the spring is changed. The boltserves as means for adjusting the nut and thereby the tension of thespring and adjustment of the wheel determines the location of operationof the slide whereby the position of the projecting end of the slide canbe accurately controlled and the necessary vertical movement of theslide may be kept to a minimum.

A keeper with a cap mounted for rotary movement is secured on the floorand has a ridge on the approach side of the cap formed by a transversevalley or depression in the cap for engaging the projecting end of theslide after the slide is positioned beyond the ridge and thereby retainthe door in an open position. Rotary movement of the cap in eitherdirection serves to locate the ridge and the valley or groove out of itsoperative transverse position and renders the keeper inoperative and theslide ineffective for retaining the door, but the keeper in cooperationwith the holder produces a snubbing stopping action. The adjusting wheelalso provides a means for moving the slide out of contact with thekeeper or stop to render the holder ineffective. The stop may be anintegral unit if desired to reduce cost.

The stop may be mounted on a pipe to accommodate for doors swinging outover a step and the heights of the stops can be varied for differentclearances of doors. The mounting of the stop on a pipe also providesangular adjustment of the abutting stopping surface with relation to theopen door. A modified form of flush floor mounting base provides forsecure attachment and for angular adjustment of the stop.

Referring more particularly to FIGS. 1, 2 and 3 of the drawing, thelower corner of the lock edge of a door shown in phantom has a doorholder mounted thereon. The holder comprises a rounded semi-cylindricalbody 111 having apertures 12 in the upper portion thereof and apertures13 in a skirt portion 14 for receiving fastening screws or the like forsecuring the holder on the door. Suitable screw head receiving recesses15 are provided for preventing the screw heads from projecting above thesurface of the body. The top portion of the exterior of the body 11 isof spherical contour.

A channel 16 shown as rectangllar extends through the bottom of theholder body 111 and terminates adjacent the top where a transversechannel 17 intersects channel 16; said channel 17 is open at the outerand inner sides of the holder body and is of a width greater than thewidth of channel 16. A slide .18 of a shape to snugly fill the channel16 is mounted for vertical sliding movement and has tines 1-9, 19between which a roller 20 is rotatably supported by means of an axle pin21 extending through the roller, the axle pin being riveted or otherwisesuitably fixed to the tines -19. The roller is of a size to bereceivable in the channel 16 for extreme vertical adjustment if desired.

The slide is provided with a vertically extending passage 22 with ashoulder 23 within the passage and intermediate the top and bottomthereof. A headed screw 24 is positioned in the passage 22 with its head25 below the shoulder 23 preventing the slide 18 from moving beyond thelimit of the head.

A compression spring 26 is positioned in the upper portion of thepassage 22 and reacts against the upper surface of the shoulder 23 andalso against a nut 27 nonrotatably mounted in the channel 16 andthreaded on bolt 24. The nut is of a size to be received in channel 16and is prevented from rotation by engagement with the sides of thechannel, the nut being adjustable by rotation of the bolt 24 therebyvarying the pressure on the spring 26 between the nut 27 and theshoulder 23. The upper end of the bolt 24 is slidably received in a bore28 extending upwardly from the transverse channel 17 and beingrestricted at its end in a smaller bore 2 9. The upper end of the bolt24 is provided with a polygonal socket 30 of the Allen Head type ofreceiving a polygonal shaped tool for obtaining the proper adjustment ofthe spring pressure. The restricted bore 29 prevents unauthorizedadjustment of the spring 26 without the proper tool. However the bore 28may be continued through the top to permit use of a longer bolt forgreater adjustment.

Threaded on the upper portion of bolt 24 is an adjusting wheel 31 of asize to be received in transverse channel 17. The channel may be made ofa size to snugly engage the upper and lower surfaces of the wheelthereby preventing vertical movement of the adjusting wheel wherebyrotation of the wheel will raise or lower the bolt 24 with the slide toany desired location of operation. However a rabbet 32 maybe formedadjacent channel 17 at each edge thereof and an apertured arch spring 33embracing bolt 24 and supported by the ledges of rabbets 32 is providedfor urging the adjusting wheel 31 upwardly against fixed abutments.

The upper side of the adjusting wheel may be provided with a hub 34 andthe body 11 may be counterbored for snugly receiving the hub 34 therebycentering the adjusting wheel for guiding the upper end of the bolt 24,the counterbore also serving as a bearing for the wheel. Theconstruction with the arched spring permits a smaller adjusting wheel ornut to be used and the resulting dimension of the body outward from thedoor may be reduced making the sides of the channel '16 as thin asdesired for economy of materials. The body is shown as being formed of acasting or the like with a web 35 forming the door side of the channel16 and such web may be of any desired height to provide adequate bearingsurface. The adjusting wheel 31 is a flat disk with a threaded bore andthe disk presses directly on the portion of the body at the upper end ofthe channel 16. In one embodiment roller bearings have been used on thefront and back of the slide reducing friction particularly for use withheavy doors and heavy spring tensions in door closers or in the doorholder, suitable ledges being provided in the body at the top and bottomof the rollers to retain the rollers in operative position duringshipmerit or use.

The skirt 14 may be provided with a recess 36 in the door side thereofand a piece of rubber-like material 37 may be fastened in the recess toserve as a bumper for engaging a stop or keeper. The strip 37 may beretained. by the clamping action of the door holder fastening screws onthe door, the strip 37 being clamped between the door and the skirt 14.Other fastening means may be used to secure the strip 37 to the skirtsuch as screws, rivets or the like. It will be evident that the strip 37may be mounted on the outer surface of skirt 14 to engage a stop orabutment in a conventional manner.

Cooperating with the holder on the door is a keeper shown mounted on thefloor including a base 38 having a smooth substantially frusto-conicalshape and flattens at the front and provided with screw receivingapertures 39 recessed from the upper surface of the base so that thescrews may be located with their heads entirely below said upper surfaceof the base. An upwardly extending cylindrical projection 40 on the baseis provided with an annular groove 41 around its periphery.

A cap 42 provided with a circular recess cooperating with the projection40 is pivotally mounted on the base for movement about the vertical axisof the projection 40. The projection 40 is provided with a horizontalbore extending part way through and open at the rear and communicatingwith the groove 41. Within the bore a spring 43 extends to the inner endthereof urging a ball 44 outwardly into contact with the inner peripheryof the recess of the cap. The inner periphery of the cap is providedwith ball receiving recesses 46, 46, and 47 into which a portion of theball 44 projects when the corresponding recess is in alignmenttherewith, the ball being shown in recess 46 corresponding to theposition of the cap when a door is to be held open. The cap 42 isretained on the projection 40 by means of a screw 48 threaded throughthe front of the cap having its head countersunk within the cap; aprojection 49 on screw 48 extends into the groove 41 on the projectionof the base, retaining the cap on the base. The recesses 46, 46 and 47may be made to permit the cap to be easily moved from the full lineposition to the dotted line positions and may prevent further rotationby shaping such recesses with a gradual cam surface as shown at 50. Itwill be apparent that the spring 43 urges the cap against the front ofthe projection 40 thereby taking up any lost motion or inaccuracy inmanufacture. The recess 46' has an elongated portion which issubstantially concentric with the center of projection 40 so that thegroove or valley 51 in the cap 42 will turn to snugly engage roller 21in the event of inaccurate mounting of the base 38.

The cap 42 is made of a smooth rounded exterior and at the front it isslightly flattened like the base. Said cap is provided with a valley 51formed between a ridge 52 adjacent the front and the rounded center ofthe cap; the forward edge of the ridge 52 provides an inclined surface53 over which the roller 20 of the holder slide rides when the door isopened and when the door is to be kept open. The valley 51 is preferablymade of a contour so that the roller 20 contacts on two lines A and Bretaining the roller 20 from having lateral movement after engagement,and preventing rattling between the roller and the cap.

From the above it is believed that the operation should be clear.Assuming the cap to be in the full line position and the door beingmoved to its open position, the roller 20 strikes the inclined. surface53 of the cap (the normal position of the roller being only slightlybelow the position shown in dotted lines) thereby slowing up the openingmovement of the door due to the reaction against the spring 26, theroller ridging over the ridge 52; the roller 20 then drops into thevalley 51. Further movement of the door causes roller 20 to ride towardthe center of the cap up the incline of the rear side of the valleywhere the further compression of spring 26 additionally retards or snubsthe door and in the event the door is not stopped the rubber-like strip37 strikes the flattened front of the cap or the base or both dependingupon the adjusted relation of the parts thereby limiting the openingmovement of the door. The roller 20 then drops back into groove 51 andthe door is held open.

When the door is not to be kept open, the cap 42 may be turnedv to oneof the dotted line positions and the roller 20 will ride up the roundedsurface of the cap thereby slowing up the door by the reaction of thespring and the rubber-like strip 37 will prevent excessive movement assuch strip will strike the adajcent portion of the edge of the cap 42.

, Although the keeper is shown as being in the path of the door it maybe positioned so that the door may completely pass thereover and theroller 20 will be the only part which will contact the keeper making itpossible to retain the door in various intermediate positions bycarefully positioning the door with the roller 20 in the valley 51 ofthe keeper. Such keepers can be made very flat with only a slightprojection above the floor.

A modified form of keeper and door stop is shown in FIGS. 4, 5, and 6 inwhich a body includes a floor contacting base portion 54 having aflattened bottom surface and a smoothly curve-d periphery with roundedcontour including a hollow spherical segmental portion 55 at the rearwith a rubber-like stop 56 therein with a portion of the rubber-likestop projecting forwardly of the spherical segmental portion. A firstfastening element 57 is threaded into a boss 58 in the portion 55 andpasses through an aperture in the stop 56 and through an aperture inbase 54 thereby retaining the stop in position and the lower portion ofthe screw 57 may be screwed into the floor. A second screw 57A passesthrough a forward portion of the base 54 and is screwed into the floor.The forward portion of the keeper is provided. with an inclined frontsurface 59 and a valley 60 rearward thereof for receiving the roller 20shown in phantom. The outer surface of the holder body shown in phantomis provided with an abutment 61 at the lower edge thereof which willstrike the stop 56 and prevent the door from moving therebeyond. Theincline forward surface 59 and the rear side of the valley also retardthe door.

From the above description it will be apparent that the pressure ofspring 26 can be adjusted to obtain the proper retaining force forholding a door open and this adjustment is obtained by means of thehexagonal socket 30 in the top of the screw 24. To locate the positionof the roller 20 the adjusting wheel 31 is rotated to move the boltvertically. The roller position is arranged so that a minimum verticaldisplacement is required and the inclined surface 53 or 59 can berelatively small because of the limited displacement required of theslide and roller. The lost motion between shoulder 23 and the head 25 ofthe screw permits this movement of the slide 18 relative to the body.

If desired the stop 56 may be omitted and the keeper may be made lowenough for the bottom of the door 62 to pass thereover as shown inphantom in FIG. 4; in such case the stop 56 and the hollow sphericalsegment 55 are omitted. The keeper may then be made as low as desired asshown in FIG. 7 and keepers may be located in a number of positions tohold the door partially open, completely open, or any intermediateposition or may hold the door closed if desired. The projection of thekeeper may be so small as not to endanger persons and because of therounded contour there is practically no danger of persons trippingthereon. The skirt 14 of the door holder may be reduced or omitted andthe body 11 provided with a screw head receiving recesses like thoseshown at 15.

For retaining the adjusting wheel in fixed position a screw 63 may bethreaded in the body 11 and be provided with an Allen Head similar tothat of bolt 24 so that the same wrench will fit both and the entireadjustment can be made with the wrench and the adjusting wheel.Adjusting wheel 31 may be provided with notches 64 for engagement by thefingers or tool if desired. Also, the arch spring 33 may haveprojections and the wheel 31 may have indentations or recesses forcooperation with the projections for maintaining the wheel in adjustedposition. The locking screw 63 may be positioned to engage the edge ofadjusting wheel in a direction perpendicular to the axis of bolt 24.Also the locking screw may be positioned so that it will be locatedbelow the wheel 31 and located to apply its pressure in a direction toraise the location adjusting wheel to abut against the portion of thebody at the upper end of the channel so that the body takes the reactionof the roller directly.

The form of the invention shown in FIG. 7 includes a base of appreciablelength with a valley or groove 65 thereacross for receiving andretaining the roller 20 of the holder and base 66 thereof is secured tothe floor by screws countersunk in apertures 67 and screwed into thefioor. This structure is preferably provided with rounded edges toprevent injury to persons or equipment. This type may be used forholding a door in an intermediate position since the roller may passthereover in both directions.

Although the keeper is shown as being on the floor, it may be mounted onan angle bracket for attachment to a wall or other part of a buildingconstruction and the holder may be mounted on the door or other movablemember for cooperation with the keeper to maintain the door closed oropen as desired.

The form of the invention shown in FIGS. 4 to 6 may include a rotatablemember similar to cap 42 for moving the valley out of the path of theroller 20 of the slide. A member having the valley and ridge may berotatably mounted in a recess in the base 55. Similarly the cap 42 ofFIGS. 1 to 3 may be rotatably mounted in a circular recess in the base.I

The small size of the door stops or keepers will permit mounting thekeeper on the end of a pipe for use in locations where steps are locatedbelow the open position of the door.

With the present door holder the tension of the spring 26 can beadjusted for use on doors that have no door closer and the presentholder may be adjusted for use with practically any door closer withoutrequiring a careful engineering analysis, since the adjustment can bemade by a workman with very little training.

The position of the slide can be arranged so there is 9 no danger ofdamaging rugs by dragging the'reover and the height of the keeper may beadjusted by the use of shims or washers of the shape of the base toobtain the most desirable height.

The cap 42 has the ball receiving recess 46' of appreciable length alongthe circumference of a circle with the center being the center of thecap 42 whereby the cap will adjust for any irregularity in mounting onthe floor. If, for example, the groove or valley 51 was out of properposition for receiving the roller 20, but generally near the correctposition, the cap will rotate slightly until the groove 51 is parallelwith the roller 20 at the point where they engage for retaining the doorin its open position. If there is any slight variation from the desiredposition the cap will adjust for accommodating the roller, the rollerand/ or the rubber-like strip 37 serving to produce this correctregistration.

Although the cap 42 of the modification shown in FIGS. 1 to 3 has beenshown to be separate from the base and rotatable relative thereto, itwill be apparent that the entire structure may be made integral with thecap being non-adjustable accordingly reduced the height of the portionprojecting above the floor and also reducing manufacturing costs sincean integral structure may be cast and can be secured to the floor byscrews therethrough.

The screw threads on bolt 24 and the length and size of the spring areso designed that the nut cannot compress the spring to cause each coilto contact the adjacent coil and lock the parts, and therefore there isno danger of breaking the mechanism by extreme movement, as the slidemay still be urged inwardly from any adjusted position.

The adjusting wheel may be an internally threaded sleeve surrounding theupper end of the bolt 24 and the sleeve fixed against axial movement andsuch sleeve can be adjusted from the upper end of the body similar tothe adjustment of the bolt, a groove in the sleeve and a pin or otherprojection from the body into the groove of the sleeve can hold thesleeve in proper position and take the reaction of the slide, or thesleeve can have a flange on the lower end and arch spring 33 may urgethe flange into abutting relation with the upper end of the body. Alsothe arch spring 33 may be omitted and screw 63 can press the adjustingwheel against the lower portion of channel 17 thereby reducing thenecessity of machining an accurate channel 17.

Although the keeper is shown as being on a stationary support such asthe floor and the holder is on the movable member such as a door, itwill be apparent that the keeper may be mounted on the door and holdermay be mounted on the floor. In either arrangement the parts may bemortised into the door and door jamb if desired and can be used toretain the door open and/or closed.

A bearing movable relative to said slide and said bolt 24 may be locatedwithin the passage 22 of the slide 18 with the spring being in twoparts, one part above the bearing and the other part below the hearing.The bearing may be of the ball bearing type within a suitable race sothat the balls contact the bolt 24 and thewalls of passage 22. With sucha bearing the machine may be reduced on the inside of the channel 16 andthe added bearing serving to guide the upper portion of the slide, thelower portion of the slide being guided by the body in the usual manner.

Referring more particularly to FIGS. 8 to 18, a modification of theinvention is shown in which a cover is provided for the body carryingthe slide which cover completely encloses the operating mechanism. Oneform of stop or keeper is mounted on a flange base for increasedstability and bases of varying height usable with a standard rotatablecap accommodate for different clearances between the floor and door toclear thresholds or thick rugs or the like. Also the standard cap may beused with 10 a base designed for attachment to the end of a pipe toaccommodate for greater clearances.

With reference to FIGS. 8 to 18 the door holder comprises a bodyproviding a frame or chassis including a mounting plate 70 having aplurality of apertures 71 for receiving screws 72 for attachment to adoor 73. A first and heavy lug 74 projects from said mounting plate 70adjacent one end thereof while a second lug 75 spaced from said firstlug and generally parallel thereto also projects from said plate, saidlugs being provided with T-shaped slots forming a guideway slidablyreceiving a slide bar 78. A pair of flanges 76, 77 generally parallel tolugs 74, 75 project from said plate 70 adjacent the other end forreceiving a captive adjusting wheel 93 therebetween.

A slide bar 78 having a pair of tines 79, 80 at one end is slidablymounted in the guideway formed by the T- shaped slots in lugs 74 and 75and is provided with a centrallongitudinal bore 81 therethrough with anintermediate portion 82 of the bore being of smaller dimension providingupper and lower shoulders 83 and 84. A roller 85 of a diameter notgreater than the thickness of slide bar 78 is rotatably supported on ashaft 86 extending between and secured to tines 79 and 80 by riveting orthe like. The roller 85 is shown as made of metal but nylon is anespecially suitable material for the roller to reduce noise. A bolt 87is slidably mounted in said bore 81 with its head 87A adjacent theroller 85 and engageable with the shoulder 84 while a compression spring88 surrounding the bolt lies in the other portion of the bore 81reacting between shoulder 83 and a threaded plate 89 threaded on thethreaded portion of the bolt 87, such plate being prevented fromrotation by engagement with webs 90, 90 projecting from the mountingplate 70, while allowing the threaded plate to move axially whereby thespring bias may be adjusted by rotating the bolt 87 relative to threadedplate 89 by means of a screwdriver operating in screw slot 90A in bolt87.

The flanges 76 and 77 are provided with aligned bolt receiving apertures91, 92 through which the bolt 87 may freely slide, said flangesreceiving an externally knurled and internally threaded captiveadjusting wheel 93 therebetween, which wheel 93 is prevented from axialmovement by said flanges 76, 77 and rotation of said wheel 93 relativeto bolt 87 will cause the bolt 87 and slide bar 78 to move axiallythereby adjusting the outermost position of the roller 85. A leaf spring94 (FIG. 12) of arched configuration is provided with ears 95, 95 ateach end resiliently engaging shoulders formed on the mounting plate 70retaining the spring in position due to the design of the spring whichurges the ears 95 together. The central portion of the leaf spring 94 isprovided with a relatively sharp apex 96 which engages the knurledadjusting wheel 93 to retain the adjusting wheel and the bolt 87 inadjusted relation. It will thus be seen that the position of the slide78 is adjusted by rotation of the wheel 93 and the tension of the springis adjusted by rotation of the bolt 87 by means of a screwdriveroperated in slot 90A.

A hollow cover 97 of generally semi-cylindrical shape open at one end 98and of generally quarter-spherical shape at the other end 99 is providedwith a tongue 100 which extends into the stem portion of the T-shapedslot in the lug 74, while abutments 101 and 102 on the cover cooperatewith legs 103 and 104 of the lug 74, which abutments 101, 102 arereceived between lugs 74 and 75. The abutment 102 is provided with athreaded aperture 105 which is aligned with an aperture 106 in leg 104which receives an Allen head bolt 107 (FIG. 13), having a polygonalsocket therein, the aperture 106 being counterbored to completelyreceive the Allen head of bolt 107, completely hiding the bolt 107 fromview. The abutment 101 has a pin 108 for reception in an aperture 109 inleg 103 of lug 74 and the other end of the cover 97 has an aperture 110for receiving a pin 111 projecting upwardly from an enlargement at theother end of the mounting plate 70. It will thus be seen that the cover97 will be positively retained by the pins 108 and 111 received in thecooperating apertures 109, 110 respectively and the threaded bolt 107screwed into the threaded aperture 105 in abutment 102.

An extension 112 of plate 70 projects from the lug 74 and carries abumper 113 of resilient material such as rubber or the like that issecured to the extension plate by suitable adhesive, rivets, screws orthe like, which resilient material serves to reduce the noise uponstriking the stop or keeper.

The door holder shown in FIG. 14 is similar to that shown in FIGS. 8 to13, but the cover 114 is secured in position by means in addition to oras a substitute for the bolt 107 of FIG. 13 and a pin 115 similar to pin108 may be fixed to abutment 102 in lieu of bolt 107, such pin 115 beingreceived in opening 106 to positively retain the cover 114 in placeagainst lateral displacement. To prevent the cover from being removedupwardly a locking screw 116 shown in FIGS. 12 and 14 is threaded into athreaded bore 116A in enlargement 117 (FIG. 9) and such screw 116projects into the space between flanges 77, 76 which retain the captiveadjusting wheel 93 in place, the screw 116 being tightened until theinner end thereof contacts and holds the adjusting wheel 93 in adjustedposition whereby the single screw performs the function of the retainingleaf spring 94 and locking screw 107 of the modification of FIGS. 8 to13. In FIG- URE 14 the mounting plate 70 is secured to the door 73 bymeans of set-screws which have a bolt portion 118 passing throughapertures 71 in mounting plate 70 and nut portions 119 received in thedoor, the nut portions being completely within the door.

Various forms of door stops or keepers are shown in FIGS. 10, 11 and 14to 18 inclusive, the forms shown in FIGS. 10, 11 and 14 being similarexcept that the base portion is of varying height to accommodate fordifferent clearances between the floor and the bottom edge of the doorsuch as clearances from to 7 to l% and 1% to 2 respectively. Themodifications of FIGS. 17 and 18 are for clearances over steps or wherethe clearance is from 2 /8 to or more between the door and the surfacewhich supports the stop or keeper.

The stop includes a base 120 (FIGS. 10, having a flange 121 extendingaround a major portion thereof, as shown in FIG. 15, with screwreceiving countersunk apertures 123 for receiving fastening screws 122or the like by means of which the stop is securely fastened to the floor123A. Such fastening screws may be used with expansion shields forconcrete floors. The base includes an upstanding boss 124 (FIG. 10)having a bore 125 therethrough and an annular ridge 126 projectingthereabove. A bore 127 in annular ridge 126 retains a spring 128 whichurges a ball 129 upwardly, the ball being retained in the bore 127 bythe swaging of the material of the base as shown at 130. A cap 131having an annular groove 132 (FIGS. 10 and 16) of a size to snuglyreceive annular ridge 126 has -a pivot 133 extending through the bore125 of said boss 124 with the pivot having an annular peripheral groove134 which receives a split locking ring 135 which engages an annularshoulder 136 to maintain the cap 131 in proper position with relation tothe base. The cap is provided with a pair of recesses 137 and 138 whichselectively receive the projecting portion of the ball 129 tosemi-positively retain the cap in either the door holding position shownin FIG. 11 when the ball is in the recess 138 adjacent a flattenedstriking surface 139 of the cap or in the door stop position shown inFIG. 11 when the ball is in recess 137. The flattened portion 139 of thecap cooperates with the rubber bumper 113 on the holder when the door isopened a suflicient amount. The cap 131 is provided with a smoothrounded exterior with a valley or groove 140 eccentrically located inthe cap for receiving roller 85 to retain the door in open position. Ifthe stop comprising the cap 131 and base 120 are to be used solely as astop, the cap 131 is rotated into the position shown in FIG- URE 11 sothat the rounded exterior of the cap 131 is struck by rubber bumper 113before roller can reach valley 140, the adjacent surface 141 of the capserving as a cam causing the roller 85 of the door holder to be urgedlaterally toward door closing position thereby assisting theconventional door closer in the door closing operation.

The modification of FIG. 11 includes an intermediate height of base 142and the modification of FIGURE 14 includes a still greater height offlanged base 143 for a greater door clearance, these bases beingotherwise similar to the base of FIG. 10 with the same cap 131 beingused with each size of base thereby reducing the number of ditferentparts required for accommodating any clearance of door. Each size ofbase has a flange extending over a major portion of the periphery andeach base has a flattened side 144 which registers with the flat side139 of the cap 131 to cooperate with the rubber-like bumper 113.

Referring to FIGS. 17 and 18, the door holder is the same as in FIGS. 8to 10 including a resiliently urged slide carrying the roller 85receivable in the valley in the cap 131, but the cap is mounted on asleeve 145 having a bore 146 which snugly receives the upper end of amounting pipe base 147 and is secured thereto by means of taper pins 148or the like pasing through aligned apertures in the cap and pipe. Asecond bore 149 of smaller diameter in communication with the first bore146 provides a shoulder 150 which abuts against the end of the pipe 147for axially fixing the position of the sleeve 145 on the pipe. A thirdbore 151 in communication with the other bores provides a bearing forthe pivot 133 of the cap 131. The outer periphery of the upper end ofthe sleeve 145 is reduced to provide an annular ridge 152 which isreceived in the annular groove 132 of the cap, the cap being rotatablysecured to the sleeve by means of the split ring 135 in the groove 134of the pivot. Within a bore 153 in the annular ridge is a spring whichurges a captive ball upwardly into either of the recesses 138 or 137 ofthe cap. It will be noted that the ball is on the side of the sleeveopposite the flattened portion 154 so that in the event of any lostmotion occurring between the locking ring and the shoulder between bores149 and 151, the side of the cap 131 adjacent the door will be urgedtoward its lowermost position, thereby avoiding objectionable lostmotion. The spring 128 for urging the ball to operative position is ofsufficient strength to firmly retain the cap in the selected positionwhile permitting change when desired to avoid accidental orunintentional changes in position.

The pipe 147 is provided with two transverse holes 155 whichadditionally serve to key the pipe into a concrete floor 156 by means ofwhich the pipe is held in position. Such pipe may be placed in positionwhen concrete floors are poured or installed later by drilling a holeand pouring melted lead into the hole around the pipe. Frequently awood, tile or other floor covering 156 will be placed over the concretefloor 157 and a covering flange 158 is then provided to cover the jointbetween the pipe and the floor covering to obtain a neat appearance, theflange being of similar appearance to the exposed portion of the base120 and flange 121 and being secured to the floor by screws or the like.

An advantage of the pipe mounting is that the pipe is first mounted inthe floor without regard to angular position of the pipe with respect toits axis and the sleeve 145 with its previously formed holes for taperpins 148 is positioned on the pipe after the door is mounted and theprecise position of the bumper 113 when it strikes the flat surfaces 139of the cap or 154 or of the sleeve 145 is known Then the final positionof the sleeve 145 is located and holes are drilled into the pipe usingthe 13 previously formed holes in the sleeve as guides. The taper orlocking pins 148 are driven into the aligned holes thereby assuringproper and permanent mounting of the stop with respect to the holder.

If desired a pipe may be mounted on a large flange and cut off to thedesired height and the sleeve 145 secured in accurate position asdescribed above.

The pipe 147 may be secured in other ways as by nuts or the like.

Various changes may be provided in the precise structure and the cover97 may be held in place by both the screw 107 and screw 116 and theadjusting wheel 93 may be prevented from movement by both the spring 94and screw 116. The chassis and cover may be made of corrosion resistantbronze or other suitable material and may be plated in nickel orchromium. The bolt 87 is threaded a limited amount so that when thethreaded plate is at the limit of maximum adjustment for maximum tensionof spring 88 there will be sufficient clear-' ance for the slide to moveupwardly a sufficient amount to ride into the valley 140 of the capthereby avoiding breakage of the structure. If desired the roller 85 maybe made of nylon or similar material to reduce noise. The structure ofthe stop is such that there is no danger of water getting into orfreezing in the operative mechanism so that the cap may be rotated by afirm force under all weather conditions. The stop may be integral asshown in FIGURE thereby reducing costs of manufacture.

Referring to FIGS. 19 to 23 inclusive, a bank of doors 159, 160, aremounted on hinge jambs in the usual manner and swing out over adownwardly inclined ramp 161 on which door stops 162 are mounted andcooperate with door holders 163 on the doors to retain the doors in openposition as shown for door 159 and permitting closing of the doorwithout manual stooping by merely exerting a small closing force on thedoor. It will be noted that door stops 162 are mounted closely adjacentthe hinge jambs so that a relatively low door stop can be used and thedoor stop can be located out of the path of persons walking near thedoors. This arrangement is permitted because the tension of the slideprojecting spring can be adjusted to obtain the correct retaining forcefor maintaining the door open.

The modification of door holder 163 shown in FIGS. to 23 includes achassis 164 formed by casting from suitable material such as bronze andshaped to conserve material and including a lug 165 intermediate itsends having a rectangular guideway 166 therethrough which re ceives arectangular slide 167 having a bore 168 extending endwise therethroughwith a shoulder 169 intermediate the ends of the bore. A spring pressedball 170 is mounted in chassis and urges the slide outwardlytransversely of the direction of movement to prevent rattling.

A pair of flanges 171, 172 are fixed adjacent one end of the chassis. Aheaded and threaded bolt 173 having its heads 174 engaging the other endside of shoulder 169 has its threaded shank passing freely throughapertures in flanges 171, 172 and threaded through a captive threadednut 175 by means of which the position of the slide can be adjustedrelative to the chassis 164.

A spring adjusting nut 176 is threaded on bolt 173 and engages one endof a compression spring 177, the other end of the spring 177 engagingthe one end side of shoulder 169 for causing a projecting force on slide167 in accordance with the adjustment of the nut 176.

The other end of the chassis is provided with an abutment surface 178made of a rubber like material secured to a skirt 179 by any suitablemeans, the skirt 179 having side flanges 180, 180 with no flanges on theextreme end. A nylon roller 181 is rotatably mounted on a pin mounted ina recess in the other end of the side opposite the abutment surface, theroller being of a size to be receivable in the rectangular guideway 166to permit maximum adjustment.

The adjustment of the captive nut is maintained by means of an archshaped spring 182 having a projecting knob engaging the knurled orserrated edges of the captive nut 175. Additionally or as a substitutiona set screw 182A may be threaded in lower flange 171 and urge thecaptive nut upwardly against the upper flange 172 to avoid lost motion.Alternatively or in addition an arched apertured spring leaf may bemounted on the upper surface of flange 171 with bolt 173 passing throughthe aperture in a manner similar to arch shape spring 33 and may beprovided with projections engageable with apertures or the like in theadjusting captive nut 175. The spring adjusting nut 176 is of a size tobe prevented from rotation by engagement with the adjacent raisedportion of the chassis whereby adjustment of the spring tension can beaccomplished by rotating the bolt 173 with a screw driver in the slotthereof. A lock nut can be added for engaging nut 176 to preventpossibility of change of adjustment of the nut 176 relative to the bolt,the lock nut would be of smaller dimensions to permit complete rotationof such lock nut.

The door holder mechanism is hidden by a cover 183 having an aperture183A for receiving a pin 183B projecting from the one end of chassis 164for retaining the one end portion of the cover on the chassis. The sidesof the other end of the cover 183 are provided with countersunkapertures 183C which receive Allen head screws threaded into threadedapertures 183D in the sides of the lug 165. The cover is shaped to beeasily applied to the chassis covering the edges of the chassis andhiding the mechanism of the holder and hiding the attaching screwsthereof passing through apertures 183E in the chassis. The cover sidesare spaced somewhat further apart than the corresponding parts of thechassis and serve as a spring lock means since tightening of the coversecuring screws 173F deforms the cover somewhat by forcing the sidestogether producing a locking action on the screws.

The door stop includes a base having a flange 184 and a boss or hub 185provided with a bore 186 which receives a pivot stud 187 of a cap 188for rotation of the cap relative to the base. The under surface of thebase is provided with a recess 189 and with a peripheral floor engagingsurface 190. The pivot stud projects into the recess 189 and is providedwith a locking ring receiving groove in which a split locking ring 191is mounted to retain the cap on the base. The cap is maintained in doorhold open position by a spring pressed ball 192 in the base received ina recess 193 in the cap, another recess 194 being provided forcooperation with the spring pressed ball 192 to maintain the cap insnubbing position.

It will be noted that the cap is shaped to conform to the base in bothpositions thereby providing a smooth outline which cannot damage floorwaxers or the like and the smooth rounded contour prevents injury topersons. It will be apparent that the door stop is mounted on the floorwith screws or the like.

The combination of the door holder and keeper serves to act as aneffective snubber to reduce the jarring action of stopping the door whenit is forcibly opened and pushed into contact with the door stop asexplained above. An improved snubbing action is obtained by theparticular shape and dimensions of the door stop cap as shown in FIGS.24 to 30.

The holder 209 is provided with the usual adjustment for displacementand for the tension of the spring and thereby for the roller 210 asdisclosed in the previous embodiments and with the abutment surface 211which is adapted to engage the door stop.

The door stop base 212 is shown as having a flange 213 entirely aroundits periphery which is secured to the floor or other support by means ofscrews 214. The cap 215 rotatably mounted in the manner previouslydescribed is circular in plan and is generally dome shape with a moresharply sloping away surface 217 forming a depression 216 on one side ofits axis sloping to the adjacent edge thereby omitting the valleypreviously used. The approach side or door side of the stop cap isgradually sloped at 219 from the door edge to the center, the centerbeing practically fiat for a limited region adjacent the axis.

When the holder and stop are used to hold the door open as shown inFIGS. 24 and 25 the abutment surface 211 engages the circular cap at thetime the roller 210 passes over the verge into the depression 216 asufficient amount so that the door will be held in open position.However, the roller 210 is prevented from being projected to its initialextreme projected position because the sloping surface of depression 216causes the reaction of the roller 210 out from the holder to be limitedbecause the abutment surface 211 of the holder contacts the periphery ofthe door stop base hub or the door stop cap 215 or both. Consequentlythe energy of opening of the door is retained in the compressed springof the door holder and such pressure of the spring causes a pressurebetween the abutment surface 211 of the holder and the periphery of thedoor stop hub or of the stop cap 215 or both and the reaction betweenthe abutment surface 211 and the door stop results in a constantclamping action therebetween preventing any lost motion between the doorholder and the door stop.

In FIG. 28 the mechanics of this feature is shown. The roller 210 isshown in dotted line projected position just prior to engagement withthe door stop and in full lines in engagement with the door stopretaining the door in clamped hold open position. It will be noted thatthe difference between the freely projected position of the roller asshown in dotted lines is appreciably greater than the extent ofprojection in the hold open position by the distance d. Consequently thespring in the door holder retains energy in the compressed spring by theforce required to compress the spring times the distance d. Thisretention or storage of energy in the spring reduces any pounding actionresulting from the momentum in the moving door striking the door stop.Further, this action serves to provide an initial force to close thedoor as soon as additional force is applied to close the door by movingthe door so the roller 210 of the holder 209 is moved out of engagingrelation with the sloping surface 217 of the door stop.

The precise position of the roller in engagement with the sloping side217 of the depression 216 is determined by the distance d which iscontrolled by removing a small amount of the rubber-like material inabutment surface 211 to obtain the desired relation.

When it is not desired to hold the door open the cap 215 is rotated 90degrees so that the center zone 218 will lie in the path of the roller210 and the roller will merely ride up on the sloping surface of thecenter zone 218 as shown in FIG. 26 and the door will not be held open,but the momentum of the opening door will be smoothly snubbed by thecamming action of the approach side surface 218A of the center zone 218.

In FIG. 28 the approach sloping surface 219 of the cap in hold openposition is shown as having an angle a to the horizontal while the angleof slope 217 of depression 216 is identified as angle b with respect tothe horizontal. Because of the greater horizontal movement of the roller210 from the door side of the stop to the position where the door isheld open the slope a of the surface 219 can be more gradual than theslope of angle b of retaining surface 217 and consequently the springforce required to project the roller 210 outwardly from the chassis ofholder and still retain the door open can be made smaller than thespring force required to hold the door open when the slope of surface217 is the same as that of surface 219.

Further the fact that the cap 215 is circular also avoids any turningforces on the holder cap from one portion of the abutment surface 211striking the surface of the stop at a non-radial location to the pivotthat otherwise 16 would tend to rotate the cap and the base of the doorstop. The force is directly taken up by the hub 212 and the pivot axisof the cap 215 and therefore the stop will not be loosened from itsfastenings by the pounding action resulting from the eccentric action ofthe roller 210 striking the stop and the abutment surface 211 indifferent non-radial directions.

It will be noted that the cap is held in operative position by means ofa spring pressed ball 219A which cooperates with cooperating depressions219B and 219C in the cap and such depressions, 219C in the cap may bearranged to limit the extent of movement so that the cap may only rotatedegrees by the camming arrangement similar to that shown in 46 and 47 inFIG. 3. The depression 219B permits movement in both directions whileretaining the cap in door hold open position similar to that shown inFIG. 3.

A still further modification of stop is shown in FIG. 29 in which theslope of approach surface 220 of the cap 221 varies from substantially ahorizontal portion 222 to a steeply sloped portion at the location oflead line 220 to a substantially flat top portion 223. The distantsurface 224 may slope at the same angle or preferably at a steeper angleto more effectively retain the door in open position. It will be evidentthat the completely peripheral flange 213 assures more positiveretention of the stop in position.

The arrangement shown in FIG. 30 is similar to the showing of FIGS. 4and 5 and illustrates a door 225 having a door holder 226 of the typepreviously described with the skirt omitted and having the slide withthe roller 227 projecting from the holder 226. The door stop is providedwith a rubber bumper 228 in a smooth upwardly projecting body 229integral with a base flange 230 secured to the floor in any suitablemanner, the entire contour being smooth and rounded to avoid damage ofbrushes or injury to persons. The upper surface of the body is providedwith a smoothly sloping door approach surface 231 and a smoothly slopingretaining surface 232 and the dimensions are arranged to provide aneffective clamping action for the door and to prevent full projection ofthe roller 227 as explained above thereby avoiding the pounding actionof the door on the door stop. It will be apparent that the properadjustment can be obtained by cutting part of the rubber like bumper 228away to obtain the desired adjustment.

The slide may be of cylindrical shape and the roller may be in the formof a ball retained in the slide if desired to reduce manufacturing costssince the formation of circular guideways may be made by boring tools.

An integral door stop 237 shown in FIG. 31 may be supported on concretefloors in a manner to provide for the angular adjustment of the abutmentsurface 144 of the integral door stop 237 with the door holder or doorby means of a support base 233 which includes a circular disk 234 havinga downwardly extending cone 235 from which radiating flanges 236 projectto the periphery of the disk.

The support base 233 is embedded in plastic concrete during buildingconstruction so that the upper surface of the base is substantiallyflush with the surface of the floor 238.

After the base 233 is installed in the position desired for the doorstop, the door stop 237 is positioned so that the abutment surface 144is in position for abutment by the abutment surface of rubber or thelike 178 of the door holder 209 and this angular relation of theabutment surface 144 can be accurately determined regardless of whetherthe holder is mounted on the door or not since a spacing slab of thethickness of the skirt 179 and the rubber like abutment 178 can beplaced between the door and the door stop. Thereafter the position ofthe attaching srcews 214 can be accurately marked on the top of disk 234by a center punch or the like at the center of 17 each countersunkaperture of the mounting flange of the door stop to receive the screws214.

Apertures 238A are then drilled into the disk 234 at each of the markedpositions and the apertures and tapped to receive the machine screws214. The door stop is positioned with its screw receiving aperturesregistering with the tapped apertures 238A and mounted in properposition by screws 214. The door holder 209 can be mounted on the dooreither before or after the mounting of the door stop on the base. Thedoor holder and stop structure is therefore accurately mounted tooperate with a minimum of twisting forces on the door stop or holder.

It will be apparent that the pipe base mounting 147 of FIG. 18 and theX-section base mounting 233 of FIGS. 31 and 32 provide for accurateazimuth angle mounting of the door stop thereby providing a new methodof assuring that the abutment surfaces 144 and 178 are in properoperative relation.

The invention also includes structure to obtain the storage of energy inthe plunger operating spring of a conventional door holder such as thatshown in FIG. 33 in which the door holder may be of the type previouslydescribed with a roller 210 cooperating with the one piece integral doorstop 239 which may be circular in plan having the profile contour shownwith a flat abutment surface 240 against which the usual rubber likematerial abutment 178 mounted on the skirt portion 179 so that the doorholder may cooperate with the door stop 239 in the manner previouslydescribed with respect to the showing in FIGS. 24 to 30 so that theroller serves to clamp the door holder against the abutment surfaces.

When it is desired to have the door stop 239 operate without retainingthe door open it is necessary to decrease the distance between theroller 210 and the abutment surface 240 so that the roller does not passbeyond the verge or crest 241. To accomplish this result a diametricallyextending threaded bore 242 counterbored at each end is formed in thedoor stop 239. A headed machine screw 244 having a head 245 with arubber like buffer 246 thereon is threaded into bore 242. By turning themachine screw 244 by means of the head 245 at one end or by a slot 247at the other end the abutment surface of buffer 246 can be moved to thedotted line position thereby limiting the movement of the door 225, anddoor holder 209 toward the door stop so that the roller 216 of the doorholder plunger 167 can only come to the position shown in dotted linesand not pass the verge 241. Therefore the door 225 will not be held inopen position, but the door will be snubbed against the door stop by theaction by compressing the spring for the plunger or slide 167 in themanner previously described. A locking nut 248 in the rear counter bore249 provides for locking the adjustment. By change of the adjustment ofthe screw 244 the desired action of the door stop and door holder can beobtained. It will be apparent that door holders which do not have theadjustment may be used in this modification as the approach inclinesurface 250 of the door stop can be long providing sufficient verticalmovement of the plunger to permit use with existing door holders.

In FIG. 34 a one piece integral door stop 251 is shown cooperating witha door holder 209 with the door stop being provided with an abutmentsurface 252 for cooperating with a rubber like buffer 253 secured to thehead 254 of a bolt 255 which is adjustably received in a threadedaperture in a skirt 256 of greater thickness than skirt 179 of the doorholder. In the full line position shown the door will be retained inopen position. Upon adjustment of the screw 255 to a position so thatthe door holder 256 will be limited to a position so that upon abutmentof buffer 253 against abutment surface 252 the roller 210 can not passbeyond the verge 257 and the door stop and door holder will only havethe snubbing action preventing a sudden jar on the door stop.

A lock nut 258 is provided on bolt 255 on either the back or front ofskirt 256 to maintain the desired adjustment. If desired instead of ascrew receiving bore 259 being provided in the door 260 the bolt headmay be provided with wrench engaging surfaces and the lock nut can beprovided on the door stop side of the skirt portion 256 between theskirt 256 and the head 261 of the bolt thereby locking the buffersupporting bolt in the desired position. This modification similarlyassures proper snubbing action will be obtained in both adjustmentsregardless of whether the door holder of the present invention orcompeting door holders are used with this door stop.

In FIG. 35, a door holder 226 without a skirt such as that shown in FIG.30 may be used with any of the door stops previously described and theadjustment between the door holder and the door stop can be accomplishedby means of a buffer 262 on the head 262A of the female past 263 of aset screw. The screw passes through a bore in door 225 .and includes amale part 264 which is received in the female part 263. The female partis threaded on its outer surface receiving a locking nut 265 which abutsthe door whereby the adjustment of the buffer head 262 can be made sothat the door holder and the door stop can hold the door open and/orprovide the snubbing action desired as previously described.

To provide for the rapid change from door hold open condition to doorstop snu'bbing action an attachment for securement to the door or skirtof the door holder includes the rubber like buffer 265 secured to thehead 266 of a cylindrical stud 267 slidably and rotatably mounted in oneend of an externally threaded tube 268 mounted in a door 225 and held inplace by a lock nut 269 against one surface of the door. An internallythreaded tubular stud 270 having a head 271 is threaded onto externallythreaded tube 268 and head 271 which abuts the other surface of thedoor. By suitable adjustment of the nut 269 and tubular stud 270 theexternally threaded tube 268 is securely held in place.

A tension spring 272 within the tube 268 is secured at one end to an eye273 on cylindrical stud 267 and secured at its other end to a strut 274received in diamettrically opposed notches 275 on the inner end of thetube 268 whereby the cylindrical stud and the buffer 265 are urged tothe full line position shown in the drawing. The head 266 is providedwith a plurality of lugs 276 (three being illustrated) which arereceived in large registering notches 277 whereby the buffer is retainedin its retracted position by spring 272 when the lugs 276 are receivedin the large notches 277. In this position the door will be held open asroller 227 passes the verge 257.

When it is desired to have the buffer adjusted so that the door will notbe held open the head 266 with buffer 265 are rotated so that the lugs276 are partially received in shallow notches 278 in the outer end ofthe tube 268 thereby maintaining the buffer in the dotted line positioncausing the buffer 265 to engage the abutment surface 252 of the doorstop 259 before the roller 227 of the door holder passes the verge 257and therefore the door will not be held open. It will be apparent thatthe nuts 269 and 270 are adjusted so that when the buffer is in itsretracted position shown in full lines the roller 227 will pass beyondtheverge 257 a sutficient amount so that the door will be kept open.This provides means to obtain the clamping action previously described.When the buifer is rotated so that lugs 276 are received in shallownotches 278 the buffer is projected from the door so that the distancefrom the buffer to the roller 227 is reduced and the roller 227 cannotreach the verge 257 and therefore the door will not be held open.

It will be apparent that this modification can be used with a doorholder with a skirt 256 or with a door holder without a skirt. Themodification of FIGS. 34 and 35 can be mounted directly on the skirt 256where it is desired to have the entire structure as an integral unit,the tubular screws 263 or 268 being threaded into a threaded aperture inskirt 256. It will also be apparent that these adjustment structures canbe mounted in the door stop similar to the mounting shown in FIG. 33.The adjustment can be made to obtain the most advantageous operationwithout requiring the special characteristics of the door holderdescribed since the slant approach portion 250 of the door stop can bemade as long as necessary for the movement of door holder bolt 167 andthe snubbing action can be controlled by the adjustment of the lockingnuts 270 and 269. By the selection of the depth of notches and height oflugs 277 and 276 respectively the operation can be further controlled.

Referring to the modifications shown in FIGS. 37 through 41, anelongated base plate 300 having one wide end of semi-circular shape andthe other end of smaller semi-circular shape with mounting countersunkapertures 301 and 302 at the respective ends for receiving mountingscrews for securement to the floor. Intermediate the ends and themounting apertures is a hollow one-quarter sphere 303 having asemi-frustoconical recess 304 therein which receives the correspondinglyshaped mounting portion 305 of a rubberlike L-shaped bumper stop elementwhich has a semi-cylindrical abutment portion 306 for direct engagementwith a door to be stopped by the door stop, part of the abutment portionbeing received in a semi-cylindrical recess 306A communicating withrecess 304. The mounting portion 305 and abutment portion 306 form thelegs of the L-shaped rubberlike bumper stop element. The mountingportion 305 is provided with two laterally spaced apertures 307 forreceiving attaching screws 307A passing through countersunk apertures inthe base plate 300 and threaded into threaded apertures in theone-quarter sphere 303.

It will be noted that the mounting apertures 301, 302 are spaced apart asubstantial distance in the direction of movement of a door whenstriking the door stop whereby any force against the abutment surface ofcylindrical portion 306 is taken up by the mounting screws usedtherewith and the friction of the base plate against the floor on whichthe door stop is mounted. This arrangement avoids excessive strains inthe door stop preventing excessive strains on the mounting screwsthereby avoiding loosening of the mounting screws and door stop from thesupport. This substantial spacing of the mounting screws also makes itpossible to use lead plugs and expansion bolts in concrete at asuflicient distance apart so that the expansion force on the lead plugsor expansion bolts and the impact of the door cannot fracture theconcrete thereby assuring long permanent trouble free mounting of thedoor stop. A suitable size of door stop has been found to be 4 incheslong with correspondingly great spacing between the mounting apertures.

The door stop of FIGS. 37 to 41 may be used with doors of differentclearance with respect to the floor on which the door stop is mountedand to provide for such difference in clearance, mounting base supportsor shims are provided so that a single size and shape of door stop maybe used with any clearance of any door. The mounting base support orshim 308 is of the same shape in plan as the door stop so that the doorstop can be neatly mounted thereon to increase the height of theabutment surface 306 to contact the door even though the clearance ofthe door from the floor is substantially increased. It will be apparentthat several different thicknesses of mounting base or shim may beprovided so that the proper height of the abutment surface 306 isobtained to contact the door to limit the opening movement of the door.In manufacture the door stop has taper from the bottom of the baseupwardly while the mounting base also has taper from the bottom towardthe top with the top of the mounting base support 308 being of identicaldimension to the bottom of the door stop base making a. smoothuninterrupted upwardly tapered side surface. The taper used in castinghas been found to be sufficient. The mounting base or shim 308 isprovided with apertures 309 and 310 in registry with countersunkapertures 301 and 302 respectively for receiving the fastener screws orthe like to secure the door stop and mounting base support 308 in fixedposition on a floor. The fasteners are substantially spaced apart in thedirection of movement of the door thereby permitting the use of aplurality of fasteners such as machine screws in expansion plugs inconcrete or masonry without any danger of such expansion plugs causingthe concrete or masonry in which they are mounted from fracturing withresulting loosening of the fasteners.

The modification of FIGS. 40 and 41 has similar parts identified by thesame reference numerals as in FIGS. 37 to 39 and differs in that a ridge311 is formed by an approach cam surface 312 and a trailing cam surface313 which cooperate with a roller 314 of a door holder to retain a door315 on which the door holder is mounted, in abutting clamping relationto abutment surface 306. This stop or keeper structure also provides forthe storing of energy in the compressed spring in the door holderreducing the impact of the door on the door holder and providing for theclamping action of the door against the door stop.

Upon reference to the modification shown in FIGS. 42 to 48 a door stopof reduced weight is made to provide for great spacing between fastenerelements and to provide for mounting at different heights foraccommodating doors having different amounts of floor clearance, theshowing omitting the L-shaped rubber-like bumper 305, 306 previouslydescribed for simplicity and to more clearly show the structure.

The base includes leading and trailing mounting pads 315 and 316connected by an intermediate trapezoidally apertured plate-like portion317 having a flange margin 31S substantially flush with the bottomsurface of the mounting pads. Extending upwardly from the intermediateplate-like portion 317 is a hollow generally quartersphere 319 elongatedin transverse direction having smooth gradually curving portionsconnecting with the intermediate plate-like portion 317. Said hollowgenerally quarterspherical portion 319 has an L-shaped recess 320, 321opening toward the leading end and the bottom of the door stop and beingin registry with the trapezoidal shaped aperture in intermediate portion317 to provide snug reception of an L-shaped rubber-like bumper similarto the rubber-like bumper 305, 306 previously described with respect toFIGS. 37 to 41 except that the horizontal portion 320 of the L-shapedrecess in the instant modification is trapezoidal in both plan and sideelevations so that positive planar abutment is obtained against thesubstantially plane surfaces defining the horizontal portion 320 of theL-shaped recess. The vertical portion of the L- shaped recess includes asubstantially cylindrical portion 321. The rubber-like bumper is ofcorresponding shape and is secured in place by screws passing throughthe trapezoidal base portion of the rubber-like bumper and threaded intothe threaded apertures 322 in the hollow upstanding generallyquarter-spherical shaped portion 319 of the door stop.

The leading and trailing ends of the door stop are of generallysemi-circular shape and fastener receiving count ersunk apertures 323and 324 are provided for attachment to a supporting surface in greatlyspaced relation assuring permanent securement to the supporting surfaceeven when the door stop is subject to excessive impact forces. Themounting pads are also provided with blind downwardly opening shear pinreceiving bores 325 and 326.

The door stop is adapted for use with doors having substantialvariations in floor clearance by the use of skeleton mounting basesupports of the proper thickness to raise the abutment surface of thedoor stop to a height to cooperate with the bottom portion of the doorto serve the function of stopping the door without requiring a different21 door stop for each clearance. The base support 327 is shown ofgreatest thicknesses in FIGS. 43, 44 and 45, the base supports 328, 329and 330 of FIGS. 46, 47 and 48 respectively being of progressivelylesser thicknesses to provide for wide variations of clearance of thedoors.

Each skeleton mounting base support includes mounting pads 331 and 332of substantially the same shape and dimentions as mounting pads 315 and316 of the door stop and are provided with fastener receiving apertures333 and 334 cooperating and registering with apertures 323 and 324respectively on the door stop so that the same fastener may be used tosecure the door stop and mounting base in fixed position. Blind upwardlyopening shear pin receiving apertures 335 and 336 are provided in themounting base for registry with blind apertures 325, 326 respectivelyand such registering apertures receive shear pins 337 to preventrelative sliding of the door stop on the mounting base. The pads 332,331 are connected by peripheral wall portions 338, 339 to maintain thepads in fixed position and such walls 338 and 339 cooperate with theperipheral flange margins 318, 318A of the door stop to give acontinuous closed margin preventing any difficult to clean corners. Itwill also be understood that the taper of both the mounting base supportand of the door stop is such that there is smooth registry of theperiphery of both on their abutting surfaces and the lower portions areof slightly longer and wider dimension than their upper portions toincrease the base in contact with the floor and to permit takingadvantage of the taper provided in making castings. The rubber-likebumper which is provided for use with this modification is of a heightto accommodate variation in clearance of the door within the differencesbetween the thicknesses of the various mounting bases provided.

In FIG. 49 a similar door holder is shown to cooperate with a roller 343of a door holder and includes an approach cam surface 340 which extendsto a ridge 341 and to a trailing cam surface 342 which cooperate with aroller 343 of a door holder to retain the door in a desired position. AnL-shaped rubber-like bumper 344 and the other portions of the doorholder are substantially the same as that previously described in FIGS.42 to 48 being adapted for mounting at different heights from the floorby the use of different thicknesses of mounting base supports.

Upon reference to FIGS. 50 to 52 a door retaining keeper is shown whichmay retain the door in any desired intermediate position including aclosed position or any desired open position and is similar to thatshown in FIG. 7. The structure includes an elongated body of rectangularconfiguration with mounting countersunk apertures 344, 345 at the ends.The body can be mounted in a mortise recess for flush mounting or on amounting base 346 of similar outline and having registering apertureswhere it is desired to have the keeper body located further above themounting surface for increased door clearance.

It will be observed that the exposed surface of the body of the keeperincludes gradually sloping cam approach surfaces 347, 348 extending fromeach end and terminating in spaced ridges 349 and 350 respectively whichridges are separated by a valley 351 so that a roller 352 of the bolt ofthe cooperating door holder can be retained in the valley or retained onone of the sloping trailing surfaces 353 and 353A defining the valley sothat if other stop means such as a conventional door stop engages thedoor prior to roller 352 contacting both surfaces 353, 353A, the doorwill be clampingly held against the door stop due to the roller 352contacting cam surface 353 or 353A without having the roller 352simultaneously engage both cam surfaces 353 and 353A. It will also benoted that the roller 352 may be adjusted to project to the dotted lineposition shown at 352A so that a substantial portion of the kineticenergy of the moving door is absorbed and stored in the operating springof the door holder which projects the bolt to such position, thedisplacement adjustment being such as to permit the unimpeded bolt toproject the roller to the dotted line position 352A. As previouslystated the door holder carrying roller 352 may be mounted in a mortiserecess in the door to avoid observation of the holder.

Referring to FIGS. 53 and 54, a modified form of door stop is shown toinclude an upstanding threaded pipe 354 fixedly mounted in concrete orthe like and on such pipe an internally threaded cap 355 having a bore356 in the top thereof is adjustably mounted by the screw threads forrotation and vertical adjustment relative to the pipe 354. To maintainthe adjusted position one or more aligned holes are drilled in the pipeand skirt portion of the cap after the desired adjustment is obtainedand pins 357 are driven therein. A turret 358 having a shank 359rotatably received in bore 356 of the cap is detachably and rotatablysecured to the cap by a split ring 360 received in a groove in the shank359 and engaging the under surface of the top of the cap therebyretaining the turret in position on the cap while permitting relativerotation thereof.

The upper surface of the cap is provided with diametrically opposed ballreceiving recesses 361 which cooperate with a spring pressed ball 362mounted in a blind bore in the turret 358 and urged against the cap andinto the ball receiving recesses whereby the turret can be retained ineither the operative door holding position shown or can be rotated toserve only as a stop. The turret and cap are shown as having fiat edges364 on each side to provide wrenching surfaces for rotation of the capand the turret. It will also be apparent that the arrangement may besuch as to retain the turret in other positions as desired.

It will also be apparent that the arrangement shown may include a solidcap and turret and that vertical adjustment can be obtained by theexpedient of telescoping the cap the desired amount and merely drivingpins 357 into aligned pin receiving apertures in the cap and pipe andsuch apertures are preferably drilled at the time of installation toobtain the proper height of the door stop or keeper to cooperate withdoor holders which may be of many different types. It will also beapparent that the cap can be secured by other means such as soldering orwelding when the desired height is obtained and that the pipe can be cutoff to obtain the correct height thereby simplifying the originalinstallation as the pipe 354 which pipe can be longer than necessary andthe final cutting can be made at the time the door is in place and thedoor holder is mounted on the door.

Upon reference to FIGS. 55 to 61 a modified form of door stop is shownfor mounting directly onto the wall and includes an L-shaped mountingbracket having one solid leg 365 having two countersunk apertures 366for receiving mounting screws 367 attaching the bracket to a wall 368.The other leg is of channel shaped cross section having a web 369 andflanges 37d terminating in a substantially solid end portion having abore 371 of large diameter extending from the web surface to a shoulder372 and an axially aligned bore 373 extending from the other side to theshoulder 372. A stub shaft member 374 having a bore 375 extending fromone end and a bore 376 extending from the other end with a shoulder orflange 377 therebetween and having a reduced hub portion 378 isrotatably mounted by the reduced hub portion 378 in a bore forming theshoulder 372 and is retained in position against axial movement whilepermitting rotation movement by means of a split ring 379 received in agroove in the end of the hub portion and reacting against the adjacentshoulder 372 thereby providing for rotary movement without axialdisplacement. The stub shaft is provided with a washer receiving recess380 at the one end receiving a star type lock washer 385 therein.

A ball and spring receiving bore 381 is provided in stub shaft 374receiving a compression spring and ball 382 urging the ball against theshoulder 372 into semipositive engagement with diametrically opposedball receiving recesses 383 or 384 to retain the stub shaft in positions180 degrees apart.

A turret 386 having a generally circular shape with flattened peripheralportions 387 spaced apart a distance greater than the diameter of thestub shaft provides means to rotate the turret. Said turret has aninternally threaded mounting stud 388 received within the bore 375 ofthe stub shaft 374 and a headed screw 389 secures the turret to the stubshaft, the lock washer 385 preventing separation or relative movementbetween the turret and the stub shaft. This arrangement provides forrelative angular adjustment between the stub shaft and the turret sothat the roller retaining groove 390 of the turret can be adjusted toreceive the roller of the bolt of a door holder when the door strikesthe door holder in line with the channel leg as shown in FIGS. 55, 56 or57 or strikes at an angle as shown in FIG. 58. The roller receivinggroove 390 is located eccentric to the axis of the turret 386 and stubshaft 374 and can be rotated 180 degrees to an inoperative positionsimilar to the modifications previously described and act as a snubberwithout retaining the door.

In FIG. 55 the L-shaped bracket supported door stop is shown mounted onthe wall 368 and a door 391 is mounted for closing an opening in a wall392, the door carrying a door holder 393 of the type previouslydescribed and the door being urged to closed position by a conventionaldoor closer 394, which is adjustable in closing force. Mountingapertures can also be provided on leg 369, 370 for securement in acorner in the manner of a dihedral angle bracket for mounting on boththe floor and wall for more fixed securement so some fasteners will bein shear and some in tension.

Split ring 379 is also bent in an obtuse dihedral angle about a linetransverse to a line joining the free ends of the ring to tightly pressthe turret against the force of spring pressed ball detent 382 the forceof the bend in the split ring 379 being greater than spring forceagainst ball 382.

In FIG. 61 L-shaped mounting bracket 365, 369, 370 is mounted above adoor 395 where two doors are located in a corner of a room as shown inFIG. 61 where doors 395 and 396 are hinged to close openings in walls397 and 398 respectively. A door holder 399 is mounted so that theroller 400 is located above the height of the top of door 395 and theturret 401 of the door stop is located above door 395 to permit door 395to open and close without interference from the turret 401 whichprojects down from the L-shaped bracket.-

Although the turret 401 is substantially identical with the turret 386the turret 401 is mounted on the hub end of the stub shaft 374 insteadof adjacent the lock washer receiving recess 380.

In FIG. 60 similar parts are identified by the same reference numeralsas in FIGS. 55 to 59, but the turret 401 has its internally threadedshank 402 extending upwardly and into bore 376 being retained by theAllen head screw 389 in fixed relation by the keying and looking actionof lock washer 385 positioned between the outer end of hub portion 378and the unexposed surface of the turret adjacent the shank 402. Aspacing washer 403 is provided between the turret and the shoulder 377within bore 373 to prevent end play of stub shaft 374 and the parts areheld in adjusted assembled relation by the screw 389.

Upon reference to FIGS. 62 and 63 the base 410 of the door stop issimilar to the base shown in FIGS. 24 to 27 being circular in plan andprovided with a central bore 411 rotatably receiving the shank 412 ofthe turret 413. A communicating recess 414 in the base receives a leafspring 415 held in position on the lower end of the shank 412 by amachine screw 416 passing through an aperture in the center of the leafspring and through a star type lock washer 417 and threaded into athreaded bore in the turret shank 412 thereby holding the parts inassembled relation with the turret in tight contact with the top of thebase 410. The leaf spring is of greater length than the diameter ofshank 412 and abuts a flat surface formed by a boss 418 holding theturret against axial movement. An upst-ruck generally semisphericalportion 419 adjacent each end of the leaf spring forms detent camsselectively received in diametrically disposed depressions 420 or 421,to retain the spring in selected position and thereby providing forrotation of and retention of the turret in the desired position. Theposition of the turret 413 can be adjusted with respect to the spring415 by loosening the machine screw 416 and making the the necessaryangular adjustment and retightening the screw in the correctly adjustedposition. Such an adjustment need be made only at the time ofinstallation and the turret can then be selectively turned intooperative or inoperative position.

Having thus described the invention it will be apparent that variationsmay be made within the spirit of the invention as defined by the validinterpretation of the scope of the appended claims and that the keepermay be mounted on the door and the holder mounted on a stationary memberor the parts may be mortised in doors or jambs as desired, and that theinvention may be used in many different ways.

What is claimed is:

1. The combination of a holder and a cooperating stop for use on a pairof relatively movable members said holder including a chassis, means tomount said chassis on one of said members, a bolt mounted on saidchassis with an end of said bolt projecting from said chassis andmovable transversely to the direction of relative movement of saidmembers, resilient means urging said bolt to projecting position, meanson the holder for adjusting the force of said resilient means, means onthe holder to adjustably limit the extent of projection of the saidprojecting end of said bolt independently of the means for adjusting theforce of the resilient means, said stop including a body, means to mountsaid body on the other member, a ridge on said body located in the pathof the projecting end of said bolt and engageable by said projecting endof said bolt, said projecting end of said bolt being movable by thesurfaces of said body adjacent said ridge upon a force being exertedbetween said holder and said stop in the direction of relative movementof said members whereby said holder and stop serve to maintain themembers in adjusted position with said holder and stop in cooperatingretaining relation and to release said members from adjusted position byforce applied to one member in the direction of relative movement.

2. The invention according to claim 1 in which the chassis includes abolt receiving channel and the bolt is slidably received in the channelin said chassis, said bolt having a screw receiving bore extending inthe direction of bolt projecting movement and including a counterboreadjacent the projecting end of the bolt, a headed machine screw mountedwith its head in said counterbore, said resilient means including aspring surrounding said bolt and reacting against said bolt andextending in the other direction from said projecting end, a nut on saidscrew and movable along said screw for adjusting the force of saidspring and prevented from rotation relative to said chassis, captive nutretaining means on said chassis in alignment with said screw, a captivenut on said screw and in said captive nut retaining means providing themeans on the door holder adjustably to limit the extent of projection ofsaid bolt, means to rotate said screw, and means to rotate said captivenut.

3. The invention according to claim 2 in which the bolt screw receivingbore includes a second counterbore for receiving a portion of thespring, said second counter-

1. THE COMBINATION OF A HOLDER AND A COOPERATING STOP FOR USE ON A PAIROF RELATIVELY MOVABLE MEMBERS SAID HOLDER INCLUDING A CHASSIS, MEANS TOMOUNT SAID CHASSIS ON ONE OF SAID MEMBERS, A BOLT MOUNTED ON SAIDCHASSIS WITH AN END OF SAID BOLT PROJECTING FROM SAID CHASSIS ANDMOVABLE TRANSVERSELY TO THE DIRECTION OF RELATIVE MOVEMENT OF SAIDMEMBERS, RESILIENT MEANS URGING SAID BOLT TO PROJECTING POSITION, MEANSON THE HOLDER FOR ADJUSTING THE FORCE OF SAID RESILIENT MEANS, MEANS ONTHE HOLDER TO ADJUSTABLY LIMIT THE EXTENT OF PROJECTION OF THE SAIDPROJECTING END OF SAID BOLT INDEPENDENTLY OF THE MEANS FOR ADJUSTING THEFORCE OF THE RESILIENT MEANS, SAID STOP INCLUDING A BODY, MEANS TO MOUNTSAID BODY ON THE OTHER MEMBER, A RIDGE ON SAID BODY LOCATED IN THE PATHOF THE PROJECTING END OF SAID BOLT AND ENGAGEABLE BY SAID PROJECTING ENDOF SAID BOLT, SAID PROJECTING END OF SAID BOLT BEING MOVABLE BY THESURFACES OF SAID BODY ADJACENT SAID RIDGE UPON